Edwaed gurney



(No Model.)

E. GURNEY.

l SBGTIONAL BOILBR. No. 389,460. Patented Sept. 11, 1888.

UNITED STATES PATENT OFFICE.

EDWARD GURNEY, OF TORONTO, ONTARIO, CANADA.

SECTIONAL BOILER.

SPECIFICATION forming part of Letters Patent No. 389,460, datedSeptember 11, 1888.

Serial No. 274,561. (No model.)

To all whom it may concern,.-k

Be it known that I, EDWARD GURNEY, of the city of Toronto, in the countyof York, in the Province of Ontario, Canada, manufacturer, have inventeda certain new and useful Improvement in Sectional Hot-Vater Boilers, ofwhich the following is a specification.

The invention relates to that class of boilers constructed ofa series ofhorizontal sections,

each section being hollow to contain Water,

and all rthe sections connected together by water-legs, so that thewater shall flow freely from one section to the' other, spaces beingleft between the sections, through each of which vertical smoke-finesare formed, the combined area of which is sufficient for thefullrequirements of the boiler.

,The object of the present invention is to arrange a simple damper bywhich the area of the center iiues in the top section may be reduced orcompletely stopped at will to retain the heat as long as possible in thelower sections; and it consists, essentially, of a diskshaped valvepivoted on the center of the top section, and having a series of holesmade through it to correspond with the center smoke-iiues in the topsection, which fines should be an equal distance apart, substantially ashereinafter more particularly eX- plained.

The drawing represents a perspective top view of a section of a boiler,showing the ap plication of my cut-oft` damper.

A represents a disk-shaped damper pivoted in the center of the sectionB.

C are a series of holes made in the damper A, the centers ot' whichholes are made on a radius struck from the center and pivot-point of thedamper.

D represents the center tlues in the section B. These fines correspondwith the holes C, and their centers are on the same radius as thecenters of the holes C.

Eis a handle permanently or detachably connected to the damper A, andextending outside of the section B.

" F and G are two stops projecting above the surface of the section B atsuch points that when the damper A is turned on its pivot so as to bringthe handle E against the stop F the holes C register with the iiues D,thus leavingthem full open, and when the damper A is turned on itspivot, so as to bring the handle E against the stop G, the center tlues,D,`will be completely covered by the damper. In this way the centerflues will be opened, so as to give the full draft of the boiler forkindling or other purposes, and when closed. to retain the heat as longas possible in the lower sections. Any desired condition of draft may behad by adjusting the damper at any desired point between the stopsF andG. By the adoption of this damper I am enabled to reduce the area .ofthe smoke-fines, thereby checking the draft and forcing the products ofcombustion to escape through the outer smoke-fines.

Vhat I claim as my invention'is l. In a sectional hot-water boiler, asection having a series of vertical smoke-lines made in its center, incombination with a diskshaped damper pivoted in the center of thesection, and having holes pierced through it to correspond with thesmoke fines in the section, the whole heilig arranged substantially asand for the purpose specified.

2. In a sectional hot-water boiler, a section having a series ofvertical smokeiiues, D, made in its center, in combination with adiskshaped damper, A, pivoted in the center of thesectionand havingholesC pierced through it to correspond with the smoke-dues D in the sectionB, stops F and G, extending above the section B, and a handle, E,attached to t-he damper A and extending to the outside of the section B,substantially as and for the purpose specified.

Toronto, May 4, 1888.

EDWARD GURNEY.

In presence ofa CHARLES C; BALDWIN, CHAs. H. RIcHEs.

